I recently went against two of my friends in a three-way casual game. We set a rule of no casting spells till all three of us had at least six mana on the field. After getting the mana, one if my opponents played {Primordial Hydra}, tapped in with five +1/+1 counters. I followed with {Deathbringer Liege}, then {Gilded Lotus} in my next turn.
By my next turn, the Primordial was at 20/20. I freaked out a little, then calmed down. I played {Balefire Liege}, using the Deathbringer's white ability to tap his Hydra, then cast {Ashenmoor Liege}, using Deathbringer's black ability to destroy it, also dealing 3 damage to him directly through my Balefire Liege.
I was incredibly happy. XD